450309 has 8 divisors (see below), whose sum is σ = 603520. Its totient is φ = 298656.

The previous prime is 450301. The next prime is 450311. The reversal of 450309 is 903054.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 450309 - 2³ = 450301 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (450301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 897 + ... + 1305.

It is an arithmetic number, because the mean of its divisors is an integer number (75440).

2⁴⁵⁰³⁰⁹ is an apocalyptic number.

It is an amenable number.

450309 is a deficient number, since it is larger than the sum of its proper divisors (153211).

450309 is a wasteful number, since it uses less digits than its factorization.

450309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 779.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 450309 is about 671.0506687278. The cubic root of 450309 is about 76.6484791976.

The spelling of 450309 in words is "four hundred fifty thousand, three hundred nine".